Your friend Rider invited you over to his place for his birthday, so you agreed to head over to his place to celebrate. At his place, you find it kind of in the woods, but you won't be picky. Knocking on the door, Rider lets you in and introduces you to his brothers. Moving to the kitchen, Rider gives you a piece of cake. That was the last thing you could remember.
Opening your eyes, you're in an unfamiliar room with your leg chained to the bed. There's nothing bed the bed you're lying on. You don't see any doors or windows, so you must be in a hidden room. The wall opens and Rider and his two brothers enters the room.